72 Key to the System of 



357. Bracts between the flowers. 



Small, annual herb; leaves entire; clusters of flower-headlets 

 mostly radical. Chtlionocephalus, 1494 



No bracts between the flowers ... ... ... 358 



358. Ultimate headlets one-flowered. 



Small, annual herb ; leaves mostly radical, upwards very 

 narrow, entire, broadly clasping at the base ; clusters 

 of flower-headlets almost radical. Hyalolepis. 1495 



Ultimate headlets many-flowered. 



Small, annual, glabrous herb; leaves basal, upwards very 

 narrow; flower-headlets radical, surrounded by very 

 narrow leaves; involucral bracts almost biseriate, partly 

 herbaceous ; pappus of perfect fruits consisting of scales. 



Isoetopsis. 1496 



359. General receptacle depressed or abbreviated. 



Small, annual herb; leaves scattered, entire, the uppermost 

 crowded around the clusters of flower-headlets ; bracts 

 surrounding the clusters of flower-headlets few, foliaceousj 

 pappus consisting of five elastic and plumous bristlets. 



Gnaphalodes, 1497 



General receptacle elongated ... ... ... 360 



360. No bracts between the flowers. 



Rather tall herbaceous plant; leaves entire, scattered; bracts 

 surrounding the clusters of flower-headlets numerous, their 

 large white appendages forming rays. Figure 86. 



(Myriocephalus partly.*) Polycalymma. 1498 



Bracts between the flowers. 



Herbaceous plants, never dwarf ; leaves scattered or near 

 the root crowded, entire ; universal involucre much ex- 

 ceeded by the flower-headlets ; pappus consisting of 

 plumous bristlets. Craspedia, 1499 



361. Pappus absent. 



Minute annuals ; leaves scattered, entire ; involucral bracts 

 almost herbaceous ; flowers few in each headlet ; fruits 

 attenuated towards the summit. Toxaiitlius. 1502 



Pappus present ... . ... ... 362 



